Gummed tape serving machine



Jan. 17, 1933.

L. LINK GUMMED TAPE SERVING MACHINE m w 1% 5 6 J M 9 film fi gi 4 a W \ZJ Ww z a d W W MW M k a Q Jan. 17, 1933. L. LINK GUMMED TAPE SERVINGmomma:

l5 1927 2 Sheets-Sheet 2 Filed Oct.

Patented Jan. 17, 1933 UNITED STATES PATENT OFFICE LOUIS LINK, 01ENEWYORK, N. Y., ASSIGNOR, BY IVIESNE ASSIGNMENTS, TO NASHUA GUMMED &COATED PAPER 00., OF NASHUA, NEW HAMPSHIRE, A CORPORATION OFMASSACHUSETTS GUM'MED TAPE. SERVING MACHINE Application filed October15, 1927. Serial No. 226,366.

fective construction which can be made at low cost. Another object is toprovide a shear having a lower movable blade which is pressed laterallyagainst the fixed blade in a suitable manner to cut properly Anotherobject is to provide an operating lever which by a single directionmovement, first feeds and moistens, and then cuts the tape into desiredlengths, the lever being returned to original position by a springandthe cutting device being returned to non-cutting position by anotherspring. Another object is to provide very simple effective tape feedrollers. Another object is to provide a cover which conceals much of themechanism and which also presses the tape down onto the moisteningdevice. Another object is to provide a simple effective adjustable tapeand tape roll guide device to accommodate and properly position taperolls of different widths. Another object is to provide a tape rollguide and presser arm device to aid in properly positioning and holdingthe tape roll.

The above and other objects which will hereinafter appear, are attainedby the new and useful improvements disclosed in this application. Toenable others skilled in the art to fully understand the essentialcharacteristics of the improvements, drawings illustrating one mode ofcarrying out the invention have been annexed as part of this disclosure.

Fig. 1 is a plan view of a machine for carrying out the invention, withcertain 'parts removed for clearness.

Fig. 2 is a right side elevation of Fig. 1 with the rightside plateremoved, \and certain parts in section.

Fig. 3 is a fragmental front elevation illustrating the shear'in fullcutting position.

Fig. 4 is an enlarged sectional view of the adjustable paper guide online 4-4 of Fig. 1.

Fig. 5 is a right side elevation of the machine.

Fig. 6 is a front elevation of the machine with the cover swung up andwith the water tank removed.

Fig. 7 is a sectional view on line 77 of Fig. 2.

Fig. 8 is a perspective view of the pawl and release mechanism.

The main frame of the machine comprises side members 1, 2 and bottommembers 3, 4. Side members 1, 2 are preferably of sheet metal and havesupporting feet 5 provided with rubber members 6. Side members 1, 2 areconnected together at the front by means of the bottom member 4 havinglugs 7 connected to members 2 and lug 8 connected to member 1. Screws 9,10, together with spacing pins 11, 12 'connect the sides 1, 2 at otherplaces in a well known manner. member 3 has lugs 13, 14 engaged aboutpin 12 and then extends down and forward as shown in Fig. 2, terminatingadjacent fixed shear blade 15 where it is connected by screws 16 to lugs17 of side members 1, 2. Also secured by screws 16 is a tape guide plate18 having its central portion spaced above memher 3 to provide passagefor the tape, and having its rear curved upward to form guard 19.

Member 3 is cut away at 20, 21 to permit guide discs 22, 23 to beadjusted to different positions on pin 24 pivoted in side members 1, 2.As best seen in Fig. 4, pin 24 has a plurality of annular grooves 25 toaccommo- Bottom date balls 26 pressed by springs 27 in holes 28extending diametrically in discs 22, 23.

By pushing discs 22 and 23 longitudinally of pin 24, balls 26 will moveout of certain grooves 25 against action of springs 27 and when thediscs again reach a position over any of the grooves 25, the balls26will be snapped into locking position again by springs 27. Pivoted topin 12 by ears 29, is a roll post tioner and guide in the form of apresser arm '30 carrying a pin 31 and adjustable discs 32,

33 similar to pin 24 and discs 22, 23. Pin 31 of this presser armengages a tape roll 34 somewhat to the rear of its top and by action ofspring 35 presses the tape roll 34 down and forward against 'pin 24, thediscs 22, 23, 32, 33 having been adjusted to span the tape roll. Thetape roll is thus held in a constant position and alignment withoutbeing per mitted to move about while the tape unwinds.

Fixed shear blade 15 is secured to side members 1, 2 by having one end36 rectangular in shape and entering a corresponding slot in ear 37 onside member 2. The other end is connected by bolt 38 to car 39 on sidemember 1. The movable shear blade 40 is also mounted at one end on bolt38, but is freely pivoted thereon. Blade 40 has a slot 41 engaged by pin42 on shear lever 43 which lever is pivoted to ear 44 of member. 4 bybolt 45. Shear lever 43 has an angled extension 46 adapted to be engagedby abutment pin 47 or like reinforcement mounted in oper-.

ating lever 48. Spring 49 extends between shear lever 43 and the pin orthe like 50 in such a direction as to pull shear lever 43 andconsequently blade 41, laterally, to at all times maintain a goodcutting action of blades 40, 15, and at the same time to normally act onshear lever 43 to cause blade 41 toresume non-cutting position. It willbe seen that as shear lever 43 travels along blade 40, the point oflateral pull on blade 40 gradually shifts in the direction of the freeend of the blade 40 as the point of cutting action approaches the samefree end. Thus at all times good cutting action of the shear blades ismaintained.

Removably resting on member 4 is a water tank 51 having a downwardlyextending tongue 52 bent at 53 to provide a seat for the end of brush54. Lip 55 extends as shown enough room is provided for inserting brush54 into tank 51, and no more, to prevent undue tendency of waterslopping out of the tank when being handled. WVater ascends brush 54 formoistening the tape.

Guide plate 18 is cut-away at 56 to accommodate knurled feed roll 57mounted on pin 58 which is sufliciently thin and inherently resilient topress feed roll'.57;, sufliciently firmly against another knurled feedroll 59 extending up through slot 60 in member 3. Lower feed roll 59 issecured on a shaft 61' operated by gearing as shown, from gear 62rigidly secured to ratchet 63 andboth mounted to freely turn on shaft64. Rigidly secured on shaft 64 is a ratchet arm 65 carrying a pivotedpawl 66 normally urged by spring 67 into engagement with ratchet 63.When pawl 66 moves to a certain position, it strikes a pin 68 fixed inside 1 which causes pawl 66 to be disengaged from ratchet 63, thusceasin to turn knurled feed roll 59.

ecured to the rotruding non-circular end 69 of shaft 64 is the operatinglever 48, previously mentioned, secured by taper pin-70 or othersuitable means. Mounted in a curved slot 71 is a headed limit bolt 72carrying pointer 73, limit bushing 74, knurled adjusting nut 7 5, andcover nut 76. Thus by means of bolt 72, the upward movement of operatinglever 48 can be limited as desired. Lever 48 is normally urged upwardagainst bushing 74 by means of coil spring 77, see

and bottom 3. On release of arm 30, roll 34 tends to be pressed intoposition as shown in Fig. 2 against pin 24. The tape end is led betweenknurled feed rolls 57, 59 by pressing down on operating lever 48 whichfeeds the tape out'between parts 18 and 3, to fixed shear blade 15.Operating lever 48 is then released and spring 77 swings it up until itsstrikes limit bushing 74. By means of knurled nut 75, bolt 72 carryinglimit bushing 74 is adjusted for any length of cut desired. Tank 51 isfilled with water and brush 54 inserted and the tank is placed inposition in the machine, which is now ready to feed, moisten and cutstrips of gummed tape of uniform predetermined length.

By depressing operating lever 48, since pawl 66 is in engagement withratchet 63, the tape is fed forward until one end of pawl 66 strikesagainst fixed pin 68, causing the toward brush 54. It will be seen thatjust 'p awl to be released from ratchet 63, and the feed of the tape nowceases although lever 48 is pressed on down. Presently pin 47 of lever48 engages end 46 of shear lever 43 and swings movable shear blade 40 tosever the tape. On release of operating lever 48, the operating lever isfirst moved upward by action of both springs 77 and'49 until shear lever43 returns to normal position. From this point upward, the operatinglever 48 is moved by spring 77 alone, until the lever strikes limitbushing 74, when the machine is again ready to feed, moisten and cutanother strip of tape of the same length as the first one. In operation,the strip of tape is pushed part way over the moistening brush 54 andwhen grasped by the fingers and pulled out-to. be used, the remainder ofthe strip is moistened as it passes over brush 54.

The invention may be embodied in other specific forms without departingfrom the spirit or essential characteristics of the invention, and thepresent embodiment is therefore to be considered in all respects asillustrative and not restrictive,the scope of the invention beingindicated by the appended claims rather than by the foregoingdescription, and all changes which come within the meaning and range ofe uivalency of the claims are therefore inten ed to be embraced therein.

I claim:

1. A gummed tape serving machine comprising, a tape shear device havinga fixed blade and a movable blade pivoted adjacent one end of the fixedblade, and operating means for swinging the pivoted blade to cuttingposition, the point of engagement between the operating means andpivoted blade being progressively farther from the pivot of the blade asthe blade moves to full cutting position, thereby increasing theleverage as the cutting point approaches the free end of the movingblade, to insure a clean cutting action throughout the operative lengthof said blade.

2. The machine of claim 1 in which the operating means engages thepivoted blade by means of a pin and slot connection.

The machine of claim 1 with yielding means engaging the operating meansto cause the pivoted blade to be pressed laterally against the fixedblade.

. 4. The machine of claim 1 with yielding means connectedwith theoperating means and acting on the pivoted blade through said operatingmeans and at a location remote from the pivot to cause the pivoted bladeto be pressed laterally against the fixed blade.

5. A gummed tape serving machine comprising a tape feed device, a tapeshearing device, a lever which by movement in one direction operatesboth the feed and the shearing devices, said feed device includinga-fixed pin, a ratchet, and a pawl actuated by the lever and which pawlby striking the pin is disengaged from the ratchet prior to the cuttingaction of the shearing device, a spring for returning the lever tooriginal position, and an independent spring for returning the shear tonon-cutting position.

6. In a gummed tape serving machine, in combination, a tape shearingdevice having a fixed blade and a movable blade pivoted adjacent one endof the fixed blade, said movable blade resting normally below the pathof the tape, spring means tending to retain said movable blade in normalposition, a lever swingable in the same or a substantially parallelplane with that of said movable blade. and means 'operatively connectingsaid lever and movable blade whereby swinging of the lever in onedirection will elevate said movable blade against tension'of said springmeans, to shear the tape, said spring means acting in a plane at anangle to that of the movable blade to cause continuous pressure of thelatter against the fixed blade during the shearing operation.

7. In a gummed tape serving machine, in combination with a frameincluding opposite side members extending longitudinally in thedirection of tape service, tape severing means extending transversely ofand between the side members and including a fixed blade and a swingableblade, a shearing lever pivoted intermediate the side members andoperatively related to the swingable blade, and means connected withsaid lever and extending laterally outwardly of one side member inposition to be operated to effect tape severance.

8. In a gummed tape serving machine, in combination with a frameincluding opposite side members extending longitudinally in thedirection of tape service, tape severing means extending transverselyofand between the side members and including a fixed blade and a swingableblade, a shearing lever pivoted intermediate the side members andoperatively related to the swingable blade, said lever moving in thesame or a substantially parallel plane with that of the swingable blade,and an operating member for said lever projecting laterally outside oneside member of the frame.

9. In a gummed tape serving machine, tape severing mechanism including afixed blade and a movable blade having an upward cutting stroke andnormally lying below and clear of the tape path, a blade actuatingmember also below the tapepath, a spring tending to resist upwardmovement of said movable blade and its actuating member, an operatinglever adapted to operate said actuating member during the latter part ofthe movement ofsaid lever in one direction, and a spring resistingmovement of said operating lever in said direction, said lever beingreturned in the opposite direction first under the influence of bothsaid springs and thereafter under influence of the second spring only.

10. In a gummed tape serving machine, in combination, a tape shearingdevice having a fixed blade and a movable blade supportedi adjacent oneend of the fixed blade, a twoarm operating lever for said movable bladepivoted on an axis substantially parallel with that of the movable bladeand having one arm operatively connected to said movable blade at theblade side of the latters support, and means for moving the other arm ofsaid lever in a direction opposite to the shearing movement of themovable blade to cause the latter to shear the tape against the fixedblade.

11. In a gummed tape serving machine, in combination, a tape shearingdevice having a fixed blade and a swinging blade pivoted adjacent oneendof the fixed blade, an operating lever for said swinging bladepivotally fixed in a vertical plane spaced laterally from the bladepivot toward the opposite end of the fixed blade, said lever movingpivotally in a similar plane as the swinging blade but in the oppositerotative direction, means for so oppositely moving said lever about itspivot to cause the swinging blade to shear the tape against the fixedblade, and spring means for returning the blade and lever to. normalposition.

12. In a machine for serving gummed strips for packaging and likepurposes, a pair of feed rolls for advancing the strip between them, alever having an operating and a return movement, gearing connectionsbetween said lever and said feed rolls, strip cutting means adapted tobe actuated by said lever during the latter part of its operatingmovement, said gearing connections including a plurality of differentsized gears intermediate the lever and the axis of one feed roll wherebythe latter is geared up with respect to the lever, one gear having aratchet wheel rigid with it, a pawl carrier coaxial with but angularlymovable relatively to said ratchet wheel and operatively connected tosaid lever, a pawl pivoted on said carrier, spring means normally urgingsaid pawl into engagement with the ratchet wheel, and a stationary stopin the path of the pawl so located as to effect disengagement thereofjust prior to actuation of the strip cutting means by said lever,whereby the strip is left at rest during the cutting operation.-

13. A gummed tape serving machine comprising a tape feed device, a tapeshearing device, including a fixed blade and a movable blade having anupward cutting action and a gravitational return action, a lever whichby movement in one direction operates both the feeding and the shearingdevices, spring means to assist gravity in returning the blade to normalposition and also for returning the lever to original position, meansoperatively disconnecting the lever and feed device prior to itsactuation of the shearing device, and a return limit stop for said leveradjustably mounted adjacent the lever for varying the return thereof, toaflord various lengths of cut tape as desired.

14. A machine for delivering tape comprising; feeding mechanism; cuttingmechanism including a blade normally below the tape ath and movableupwardly to cut, and a blade-operating lever; a control lever; andconnections for successively actuating the feeding and cuttingmechanisms by a single movement of the control lever in one direction,including a pawl and ratchet for the feeding mechanism, said pawl beingpositively operatively associated with the control lever, and means forpositively disengaging the pawl prior to actuation of the cuttingmechanismby said control lever.

15. In a gummed tape serving machine, in

combination with tape feed means, a tapeshearing device on the machineincluding a fixed blade and a movable blade pivoted adjacent one end ofthe fixed blade, a lever pivoted on the machine to swing in a similarplane as the movable blade and having a relatively long arm having ashifting point of engagement with the movable blade, said lever also arelatively short operating arm, where dy a relatively short angularmovement of sai operating arm efiects a relatively greater angularmovement of the movable blade.

16. In a gummed tape serving machine, in combination with tape feedmeans, a tape shearing device on the machine including a fixed blade anda movable blade pivoted adj acent one end of the fixed blade, saidblades normally lying with their operative edges adjacent but atopposite sides of the path of the tape, a lever pivoted on the machineto swin in a similar plane as the movable blade and having a shiftingpoint of engagement having with the latter, and a common lever foroperating the feed means and for pivotally movin said first-named leverto operate the movable blade.

17. In a gummed tape serving machine, in combination, a tape shearingdevice having a fixed blade and a movable blade pivoted ad] acent oneend of thefixed blade, said movable blade resting normally below thepath of the tape, spring means tending to retain said movable blade innormal position, a lever having arms of unequal lengths pivoted on themachine for swinging in the same or a parallel plane with that of saidmovable blade, cam means operatively connecting the.

longer arm of said lever and the movable blade, and separate means formoving the shorter arm of said lever thereby to swing the lever in adirection to elevate said movable blade against tension of said springmeans, said blade having a multiplied movement relative to that of theshort arm of the lever.

18. In a gummed tape serving machine, in combination with a frame and asupport for a tape supply, tape shearing mechanism includin a fixedblade and a movable blade, operating means for the movable blade, meansto insure lateral shearing pressure between the blades, and a pair ofrotary feed members, of less than tape width, to advance the tape fromthe supply past the shearing mechanism, said members being mounted forrelative yielding movement in a separating direction and being normallyurged into tape advancing relation.

19. In a gummed tape serving machine, in combination with a frame and asupport for a tape supply, tape shearing mechanism including a fixedblade and a movable blade, operating means for the movable blade, meansto insure lateral shearing pressure between the blades, and a pair ofrotary feed members to advance the tape from the supply past theshearing mechanism, one of said members mounted on an axial memberhaving inherent resilience and positioned relatively to the axis of theother member yieldably to urge said members into tape advancingrelation.

20. In a gummed tape serving machine, in combination with a frame and asupport for a tape supply, tape shearing mechanism including a fixedblade and a movable blade,

operating means for the movable blade, means to insure'lateral shearingpressure between the blades, a pair of rotary feed members to advancethe tape from the supply past the shearing mechanism, and variablypositionable guide means cooperating with said feed members, for tapesof difierent widths.

21. In a gummed tape serving machine, in combination; a frame; a supportfor a tape supply; means providing a service path for the tape from saidsupply; tape severing means including a movable and a fixed severingelement, operating means for the movable element, and means to insurelateral shearing pressure between said elements; and upper and lowerrotatable feed wheels to feed the tape from the supply past the tapesevering means, said wheelsbeing of a width substantially less than thatof the tape service path, and one of said wheels being mounted forbodily yielding movement relative to the other wheel in the direction atright angles to the plane of the tape and having means normally urgingit into tape feeding relation with the other wheel.

11 testimony whereof I hereunto aflix my signature.

LOUIS LIINK.

